[Lon7]

Orbits of planets were calculated long before General Relativity. I believe we put a man on the moon using newtonian physics. Many types of medicine is successful without us knowing exactly why.

Just because technology that is built on top of science works doesn't mean that it is 100% correct. It isn't that our theories are outright wrong, but they probably still are incomplete or are only approximations.

[njarboe]

"Orbits of planets were calculated long before General Relativity"

Interesting you would say that. They were calculated and the orbit of Mercury was not predicted correctly according to Newtonian Physics. Using Einstein's general relativity, the calculations matched observations.

[adrianN]

They matched the observation that were available at the time really well. Even pre-Gallilean models matched the observations of their time.